/**
    Copyright (C) 2012 Guido Ludwig

    This file is part of JATT.
	http://code.google.com/p/jatt/

    JATT is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.guidoludwig.jatt.chain.commands;

import java.io.File;

import de.guidoludwig.jatt.JATT;
import de.guidoludwig.jatt.chain.JATTContext;
import de.guidoludwig.jatt.chain.commands.config.FolderScanConfig;
import de.guidoludwig.jatt.util.ArtworkFilenameFilter;
import de.guidoludwig.jatt.util.AudioFilter;

/**
 * @author Guido Ludwig
 */
public class FolderScanCommand extends JATTCommand<FolderScanConfig> {

	@Override
	protected boolean execute0(JATTContext context) {

		boolean hasAudio = false;
		File baseDir = context.getDirectory();
		for (String file : baseDir.list(AudioFilter.INSTANCE)) {
			context.addAudio(new File(context.getDirectory(),
					file));
			hasAudio = true;
		}
		if (!hasAudio) {
			JATT.debug("  No Audio in : " + context.getDirectory().getAbsolutePath());
			return true;
		}

		for (String file : baseDir.list(ArtworkFilenameFilter.INSTANCE_PREFIX)) {
			File candidate = new File(context.getDirectory(), file);
			if (ArtworkFilenameFilter.INSTANCE.accept(candidate, file)) {
				if (!context.hasFolderImage()) {
					context.setFolderImage(candidate);
					JATT.debug("  Folder Image : " + file);
				}
			} else {
				context.addToAlternativeImages(candidate);
				JATT.debug("  Alternate Image : " + file);
			}
		}
		context.backupInitial();
		return false;
	}

	@Override
	protected boolean doneIfNotActive() {
		return true;
	}

}
